osmo-auc-gen: Add mode for verifying user-supplied AUTS
When -A is used on the command line, the respective AUTS value
will be validated and the SQN of the UICC printed.
diff --git a/utils/osmo-auc-gen.c b/utils/osmo-auc-gen.c
index c3a4fbc..e3502b2 100644
--- a/utils/osmo-auc-gen.c
+++ b/utils/osmo-auc-gen.c
@@ -62,6 +62,7 @@
"-O --op\tSpecify OP (only for 3G)\n"
"-a --amf\tSpecify AMF (only for 3G)\n"
"-s --sqn\tSpecify SQN (only for 3G)\n"
+ "-A --auts\tSpecify AUTS (only for 3G)\n"
"-r --rand\tSpecify random value\n");
}
@@ -69,13 +70,16 @@
{
struct osmo_auth_vector _vec;
struct osmo_auth_vector *vec = &_vec;
- uint8_t _rand[16];
+ uint8_t _rand[16], _auts[16];
int rc, option_index;
int rand_is_set = 0;
+ int auts_is_set = 0;
printf("osmo-auc-gen (C) 2011-2012 by Harald Welte\n");
printf("This is FREE SOFTWARE with ABSOLUTELY NO WARRANTY\n\n");
+ memset(_auts, 0, sizeof(_auts));
+
while (1) {
int c;
unsigned long ul;
@@ -89,13 +93,14 @@
{ "amf", 1, 0, 'f' },
{ "sqn", 1, 0, 's' },
{ "rand", 1, 0, 'r' },
+ { "auts", 1, 0, 'A' },
{ "help", 0, 0, 'h' },
{ 0, 0, 0, 0 }
};
rc = 0;
- c = getopt_long(argc, argv, "23a:k:o:f:s:r:hO:", long_options,
+ c = getopt_long(argc, argv, "23a:k:o:f:s:r:hO:A:", long_options,
&option_index);
if (c == -1)
@@ -146,6 +151,14 @@
sizeof(test_aud.u.umts.opc));
test_aud.u.umts.opc_is_op = 1;
break;
+ case 'A':
+ if (test_aud.type != OSMO_AUTH_TYPE_UMTS) {
+ fprintf(stderr, "Only UMTS has AUTS\n");
+ exit(2);
+ }
+ rc = osmo_hexparse(optarg, _auts, sizeof(_auts));
+ auts_is_set = 1;
+ break;
case 'f':
if (test_aud.type != OSMO_AUTH_TYPE_UMTS) {
fprintf(stderr, "Only UMTS has AMF\n");
@@ -197,24 +210,22 @@
memset(vec, 0, sizeof(*vec));
- rc = osmo_auth_gen_vec(vec, &test_aud, _rand);
+ if (!auts_is_set)
+ rc = osmo_auth_gen_vec(vec, &test_aud, _rand);
+ else
+ rc = osmo_auth_gen_vec_auts(vec, &test_aud, _auts, _rand, _rand);
if (rc < 0) {
- fprintf(stderr, "error generating auth vector\n");
+ if (!auts_is_set)
+ fprintf(stderr, "error generating auth vector\n");
+ else
+ fprintf(stderr, "AUTS from MS seems incorrect\n");
exit(1);
}
dump_auth_vec(vec);
-#if 0
- const uint8_t auts[14] = { 0x87, 0x11, 0xa0, 0xec, 0x9e, 0x16, 0x37, 0xdf,
- 0x17, 0xf8, 0x0b, 0x38, 0x4e, 0xe4 };
- rc = osmo_auth_gen_vec_auts(vec, &test_aud, auts, _rand, _rand);
- if (rc < 0) {
- printf("AUTS failed\n");
- } else {
+ if (auts_is_set)
printf("AUTS success: SEQ.MS = %lu\n", test_aud.u.umts.sqn);
- }
-#endif
- exit(0);
+ exit(0);
}